Evidence map›Paper›PMID 26604753›Full record

ArticleInternational journal of nanomedicine2015

Photosensitizer and peptide-conjugated PAMAM dendrimer for targeted in vivo photodynamic therapy.

Amreddy Narsireddy, Kurra Vijayashree, Mahesh G Adimoolam, Sunkara V Manorama, Nalam M Rao

Open access · goldAbstract read
In one paragraph

Article in International journal of nanomedicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
4.7field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 54 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

Amreddy NarsireddyCSIR - Indian Institute of Chemical Technology, Hyderabad, India.
Kurra VijayashreeCSIR - Centre for Cellular and Molecular Biology, Hyderabad, India.
Mahesh G AdimoolamCSIR - Indian Institute of Chemical Technology, Hyderabad, India.
Sunkara V ManoramaCSIR - Indian Institute of Chemical Technology, Hyderabad, India.
Nalam M RaoCSIR - Centre for Cellular and Molecular Biology, Hyderabad, India.
Indian Institute of Chemical Technology · INCentre for Cellular and Molecular Biology · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Challenges in photodynamic therapy (PDT) include development of efficient near infrared-sensitive photosensitizers (5,10,15,20-tetrakis(4-hydroxyphenyl)-21H,23H-porphine [PS]) and targeted delivery of PS to the tumor tissue. In this study, a dual functional dendrimer was synthesized for targeted PDT. For targeting, a poly(amidoamine) dendrimer (G4) was conjugated with a PS and a nitrilotriacetic acid (NTA) group. A peptide specific to human epidermal growth factor 2 was expressed in Escherichia coli with a His-tag and was specifically bound to the NTA group on the dendrimer. Reaction conditions were optimized to result in dendrimers with PS and the NTA at a fractional occupancy of 50% and 15%, respectively. The dendrimers were characterized by nuclear magnetic resonance, matrix-assisted laser desorption/ionization, absorbance, and fluorescence spectroscopy. Using PS fluorescence, cell uptake of these particles was confirmed by confocal microscopy and fluorescence-activated cell sorting. PS-dendrimers are more efficient than free PS in PDT-mediated cell death assays in HER2 positive cells, SK-OV-3. Similar effects were absent in HER2 negative cell line, MCF-7. Compared to free PS, the PS-dendrimers have shown significant tumor suppression in a xenograft animal tumor model. Conjugation of a PS with dendrimers and with a targeting agent has enhanced photodynamic therapeutic effects of the PS.

Indexed as

AnimalsBenzofuransCell Line, TumorDendrimersHumansMice, NudePeptidesPhotochemotherapyPhotosensitizing AgentsProton Magnetic Resonance SpectroscopySinglet OxygenSpectrometry, FluorescenceSpectrometry, Mass, Electrospray IonizationSpectrophotometry, UltravioletStatic Electricity1,3-diphenylisobenzofuranBenzofuransDendrimersPAMAM StarburstPeptidesPhotosensitizing AgentsSinglet OxygenAffibodydendrimersnanoparticlephotodynamic therapytargeted deliveryxenograft animal model

Identifiers

PMID26604753
PMCPMC4639554
OpenAlexW1924930037

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.